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  • Thread starter Thread starter aliak11
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I'm just wondering, does the circle pad pro work with ctrulib/homebrew? I thinking of getting one to use it to simulate the New 3DS's C-stick, since I don't currently own a new 3ds.
 
Hey, I'm writing a new homebrew app, but everytime when I try to compile it, this error occures:
/home/patrick/Schreibtisch/homebrew-dev2/eshop_music_replacer/source/main.c:269:4: warning: implicit declaration of function 'fsIsDirectory' [-Wimplicit-function-declaration]
if(fsIsDirectory(temp[temp_count]) == 0){

linking eshop_music_replacer.elf
main.o: In function `openDirectory':
/home/patrick/Schreibtisch/homebrew-dev2/eshop_music_replacer/source/main.c:269: undefined reference to `fsIsDirectory'
collect2: error: ld returned 1 exit status
/opt/devkitPro/devkitARM/3ds_rules:39: recipe for target '/home/patrick/Schreibtisch/homebrew-dev2/eshop_music_replacer/eshop_music_replacer.elf' failed
make[1]: *** [/home/patrick/Schreibtisch/homebrew-dev2/eshop_music_replacer/eshop_music_replacer.elf] Error 1
Makefile:126: recipe for target 'build' failed
make: *** [build] Error 2
Click to expand...

Here is the part of the code:

Code: 
if(dir != NULL){
        while(true){
            struct dirent* ent = readdir(dir);
            if(ent == NULL){
                break;
            }
            strcpy(temp[temp_count],ent->d_name);
            if(fsIsDirectory(temp[temp_count])){
                strcpy(folders[dir_count], temp[temp_count]);
                dir_count = dir_count + 1;
            }
            temp_count = temp_count + 1;
        
        }
    }

Does anyone know how to fix that?

Ptrk25
 
Last edited by Ptrk25,
just passing by to say: if you get the cryptic compiler error: Error: non-constant expression in ".if" statement

the assembly directive is not being evaluated by the C pre processor (ignores), and the linkage process expects to have at least one in the literal pool so the C pre processor can generate/relocate the new opcode. (ie: a pre processor C macro that uses a definition located within an assembler file)

Which translates into renaming the file extension from the no C pre processing (.s) into a C pre processed (.S) GNU assembler file

edit: or instead rename .include "header.h" into #include "header.h" where header.h has your declared symbols
 
Last edited by Coto,
It seems that the compiler doesn't find the "fsIsDirectory()" and no I don't get an "Error: non-constant expression".
 
Garcia98 said:
Can you paste here your Makefile?
Click to expand...
Sure
Code: 
#---------------------------------------------------------------------------------
.SUFFIXES:
#---------------------------------------------------------------------------------

ifeq ($(strip $(DEVKITARM)),)
$(error "Please set DEVKITARM in your environment. export DEVKITARM=<path to>devkitARM")
endif

TOPDIR ?= $(CURDIR)
include $(DEVKITARM)/3ds_rules

#---------------------------------------------------------------------------------
# TARGET is the name of the output
# BUILD is the directory where object files & intermediate files will be placed
# SOURCES is a list of directories containing source code
# DATA is a list of directories containing data files
# INCLUDES is a list of directories containing header files
#
# NO_SMDH: if set to anything, no SMDH file is generated.
# APP_TITLE is the name of the app stored in the SMDH file (Optional)
# APP_DESCRIPTION is the description of the app stored in the SMDH file (Optional)
# APP_AUTHOR is the author of the app stored in the SMDH file (Optional)
# ICON is the filename of the icon (.png), relative to the project folder.
#   If not set, it attempts to use one of the following (in this order):
#     - <Project name>.png
#     - icon.png
#     - <libctru folder>/default_icon.png
#---------------------------------------------------------------------------------
TARGET        :=    $(notdir $(CURDIR))
BUILD        :=    build
SOURCES        :=    source
DATA        :=    data
INCLUDES    :=    include

#---------------------------------------------------------------------------------
# options for code generation
#---------------------------------------------------------------------------------
ARCH    :=    -march=armv6k -mtune=mpcore -mfloat-abi=hard

CFLAGS    :=    -g -Wall -O2 -mword-relocations \
            -fomit-frame-pointer -ffast-math \
            $(ARCH)

CFLAGS    +=    $(INCLUDE) -DARM11 -D_3DS

CXXFLAGS    := $(CFLAGS) -fno-rtti -fno-exceptions -std=gnu++11

ASFLAGS    :=    -g $(ARCH)
LDFLAGS    =    -specs=3dsx.specs -g $(ARCH) -Wl,-Map,$(notdir $*.map)

LIBS    := -lctru -lm

#---------------------------------------------------------------------------------
# list of directories containing libraries, this must be the top level containing
# include and lib
#---------------------------------------------------------------------------------
LIBDIRS    := $(CTRULIB)


#---------------------------------------------------------------------------------
# no real need to edit anything past this point unless you need to add additional
# rules for different file extensions
#---------------------------------------------------------------------------------
ifneq ($(BUILD),$(notdir $(CURDIR)))
#---------------------------------------------------------------------------------

export OUTPUT    :=    $(CURDIR)/$(TARGET)
export TOPDIR    :=    $(CURDIR)

export VPATH    :=    $(foreach dir,$(SOURCES),$(CURDIR)/$(dir)) \
            $(foreach dir,$(DATA),$(CURDIR)/$(dir))

export DEPSDIR    :=    $(CURDIR)/$(BUILD)

CFILES        :=    $(foreach dir,$(SOURCES),$(notdir $(wildcard $(dir)/*.c)))
CPPFILES    :=    $(foreach dir,$(SOURCES),$(notdir $(wildcard $(dir)/*.cpp)))
SFILES        :=    $(foreach dir,$(SOURCES),$(notdir $(wildcard $(dir)/*.s)))
BINFILES    :=    $(foreach dir,$(DATA),$(notdir $(wildcard $(dir)/*.*)))

#---------------------------------------------------------------------------------
# use CXX for linking C++ projects, CC for standard C
#---------------------------------------------------------------------------------
ifeq ($(strip $(CPPFILES)),)
#---------------------------------------------------------------------------------
    export LD    :=    $(CC)
#---------------------------------------------------------------------------------
else
#---------------------------------------------------------------------------------
    export LD    :=    $(CXX)
#---------------------------------------------------------------------------------
endif
#---------------------------------------------------------------------------------

export OFILES    :=    $(addsuffix .o,$(BINFILES)) \
            $(CPPFILES:.cpp=.o) $(CFILES:.c=.o) $(SFILES:.s=.o)

export INCLUDE    :=    $(foreach dir,$(INCLUDES),-I$(CURDIR)/$(dir)) \
            $(foreach dir,$(LIBDIRS),-I$(dir)/include) \
            -I$(CURDIR)/$(BUILD)

export LIBPATHS    :=    $(foreach dir,$(LIBDIRS),-L$(dir)/lib)

ifeq ($(strip $(ICON)),)
    icons := $(wildcard *.png)
    ifneq (,$(findstring $(TARGET).png,$(icons)))
        export APP_ICON := $(TOPDIR)/$(TARGET).png
    else
        ifneq (,$(findstring icon.png,$(icons)))
            export APP_ICON := $(TOPDIR)/icon.png
        endif
    endif
else
    export APP_ICON := $(TOPDIR)/$(ICON)
endif

ifeq ($(strip $(NO_SMDH)),)
    export _3DSXFLAGS += --smdh=$(CURDIR)/$(TARGET).smdh
endif

.PHONY: $(BUILD) clean all

#---------------------------------------------------------------------------------
all: $(BUILD)

$(BUILD):
    @[ -d $@ ] || mkdir -p $@
    @$(MAKE) --no-print-directory -C $(BUILD) -f $(CURDIR)/Makefile

#---------------------------------------------------------------------------------
clean:
    @echo clean ...
    @rm -fr $(BUILD) $(TARGET).3dsx $(OUTPUT).smdh $(TARGET).elf


#---------------------------------------------------------------------------------
else

DEPENDS    :=    $(OFILES:.o=.d)

#---------------------------------------------------------------------------------
# main targets
#---------------------------------------------------------------------------------
ifeq ($(strip $(NO_SMDH)),)
$(OUTPUT).3dsx    :    $(OUTPUT).elf $(OUTPUT).smdh
else
$(OUTPUT).3dsx    :    $(OUTPUT).elf
endif

$(OUTPUT).elf    :    $(OFILES)

#---------------------------------------------------------------------------------
# you need a rule like this for each extension you use as binary data
#---------------------------------------------------------------------------------
%.bin.o    :    %.bin
#---------------------------------------------------------------------------------
    @echo $(notdir $<)
    @$(bin2o)

# WARNING: This is not the right way to do this! TODO: Do it right!
#---------------------------------------------------------------------------------
%.vsh.o    :    %.vsh
#---------------------------------------------------------------------------------
    @echo $(notdir $<)
    @python $(AEMSTRO)/aemstro_as.py $< ../$(notdir $<).shbin
    @bin2s ../$(notdir $<).shbin | $(PREFIX)as -o $@
    @echo "extern const u8" `(echo $(notdir $<).shbin | sed -e 's/^\([0-9]\)/_\1/' | tr . _)`"_end[];" > `(echo $(notdir $<).shbin | tr . _)`.h
    @echo "extern const u8" `(echo $(notdir $<).shbin | sed -e 's/^\([0-9]\)/_\1/' | tr . _)`"[];" >> `(echo $(notdir $<).shbin | tr . _)`.h
    @echo "extern const u32" `(echo $(notdir $<).shbin | sed -e 's/^\([0-9]\)/_\1/' | tr . _)`_size";" >> `(echo $(notdir $<).shbin | tr . _)`.h
    @rm ../$(notdir $<).shbin

-include $(DEPENDS)

#---------------------------------------------------------------------------------------
endif
#---------------------------------------------------------------------------------------
 
Ptrk25 said:
Sure
Code: 
#---------------------------------------------------------------------------------
.SUFFIXES:
#---------------------------------------------------------------------------------

ifeq ($(strip $(DEVKITARM)),)
$(error "Please set DEVKITARM in your environment. export DEVKITARM=<path to>devkitARM")
endif

TOPDIR ?= $(CURDIR)
include $(DEVKITARM)/3ds_rules

#---------------------------------------------------------------------------------
# TARGET is the name of the output
# BUILD is the directory where object files & intermediate files will be placed
# SOURCES is a list of directories containing source code
# DATA is a list of directories containing data files
# INCLUDES is a list of directories containing header files
#
# NO_SMDH: if set to anything, no SMDH file is generated.
# APP_TITLE is the name of the app stored in the SMDH file (Optional)
# APP_DESCRIPTION is the description of the app stored in the SMDH file (Optional)
# APP_AUTHOR is the author of the app stored in the SMDH file (Optional)
# ICON is the filename of the icon (.png), relative to the project folder.
#   If not set, it attempts to use one of the following (in this order):
#     - <Project name>.png
#     - icon.png
#     - <libctru folder>/default_icon.png
#---------------------------------------------------------------------------------
TARGET        :=    $(notdir $(CURDIR))
BUILD        :=    build
SOURCES        :=    source
DATA        :=    data
INCLUDES    :=    include

#---------------------------------------------------------------------------------
# options for code generation
#---------------------------------------------------------------------------------
ARCH    :=    -march=armv6k -mtune=mpcore -mfloat-abi=hard

CFLAGS    :=    -g -Wall -O2 -mword-relocations \
            -fomit-frame-pointer -ffast-math \
            $(ARCH)

CFLAGS    +=    $(INCLUDE) -DARM11 -D_3DS

CXXFLAGS    := $(CFLAGS) -fno-rtti -fno-exceptions -std=gnu++11

ASFLAGS    :=    -g $(ARCH)
LDFLAGS    =    -specs=3dsx.specs -g $(ARCH) -Wl,-Map,$(notdir $*.map)

LIBS    := -lctru -lm

#---------------------------------------------------------------------------------
# list of directories containing libraries, this must be the top level containing
# include and lib
#---------------------------------------------------------------------------------
LIBDIRS    := $(CTRULIB)


#---------------------------------------------------------------------------------
# no real need to edit anything past this point unless you need to add additional
# rules for different file extensions
#---------------------------------------------------------------------------------
ifneq ($(BUILD),$(notdir $(CURDIR)))
#---------------------------------------------------------------------------------

export OUTPUT    :=    $(CURDIR)/$(TARGET)
export TOPDIR    :=    $(CURDIR)

export VPATH    :=    $(foreach dir,$(SOURCES),$(CURDIR)/$(dir)) \
            $(foreach dir,$(DATA),$(CURDIR)/$(dir))

export DEPSDIR    :=    $(CURDIR)/$(BUILD)

CFILES        :=    $(foreach dir,$(SOURCES),$(notdir $(wildcard $(dir)/*.c)))
CPPFILES    :=    $(foreach dir,$(SOURCES),$(notdir $(wildcard $(dir)/*.cpp)))
SFILES        :=    $(foreach dir,$(SOURCES),$(notdir $(wildcard $(dir)/*.s)))
BINFILES    :=    $(foreach dir,$(DATA),$(notdir $(wildcard $(dir)/*.*)))

#---------------------------------------------------------------------------------
# use CXX for linking C++ projects, CC for standard C
#---------------------------------------------------------------------------------
ifeq ($(strip $(CPPFILES)),)
#---------------------------------------------------------------------------------
    export LD    :=    $(CC)
#---------------------------------------------------------------------------------
else
#---------------------------------------------------------------------------------
    export LD    :=    $(CXX)
#---------------------------------------------------------------------------------
endif
#---------------------------------------------------------------------------------

export OFILES    :=    $(addsuffix .o,$(BINFILES)) \
            $(CPPFILES:.cpp=.o) $(CFILES:.c=.o) $(SFILES:.s=.o)

export INCLUDE    :=    $(foreach dir,$(INCLUDES),-I$(CURDIR)/$(dir)) \
            $(foreach dir,$(LIBDIRS),-I$(dir)/include) \
            -I$(CURDIR)/$(BUILD)

export LIBPATHS    :=    $(foreach dir,$(LIBDIRS),-L$(dir)/lib)

ifeq ($(strip $(ICON)),)
    icons := $(wildcard *.png)
    ifneq (,$(findstring $(TARGET).png,$(icons)))
        export APP_ICON := $(TOPDIR)/$(TARGET).png
    else
        ifneq (,$(findstring icon.png,$(icons)))
            export APP_ICON := $(TOPDIR)/icon.png
        endif
    endif
else
    export APP_ICON := $(TOPDIR)/$(ICON)
endif

ifeq ($(strip $(NO_SMDH)),)
    export _3DSXFLAGS += --smdh=$(CURDIR)/$(TARGET).smdh
endif

.PHONY: $(BUILD) clean all

#---------------------------------------------------------------------------------
all: $(BUILD)

$(BUILD):
    @[ -d $@ ] || mkdir -p $@
    @$(MAKE) --no-print-directory -C $(BUILD) -f $(CURDIR)/Makefile

#---------------------------------------------------------------------------------
clean:
    @echo clean ...
    @rm -fr $(BUILD) $(TARGET).3dsx $(OUTPUT).smdh $(TARGET).elf


#---------------------------------------------------------------------------------
else

DEPENDS    :=    $(OFILES:.o=.d)

#---------------------------------------------------------------------------------
# main targets
#---------------------------------------------------------------------------------
ifeq ($(strip $(NO_SMDH)),)
$(OUTPUT).3dsx    :    $(OUTPUT).elf $(OUTPUT).smdh
else
$(OUTPUT).3dsx    :    $(OUTPUT).elf
endif

$(OUTPUT).elf    :    $(OFILES)

#---------------------------------------------------------------------------------
# you need a rule like this for each extension you use as binary data
#---------------------------------------------------------------------------------
%.bin.o    :    %.bin
#---------------------------------------------------------------------------------
    @echo $(notdir $<)
    @$(bin2o)

# WARNING: This is not the right way to do this! TODO: Do it right!
#---------------------------------------------------------------------------------
%.vsh.o    :    %.vsh
#---------------------------------------------------------------------------------
    @echo $(notdir $<)
    @python $(AEMSTRO)/aemstro_as.py $< ../$(notdir $<).shbin
    @bin2s ../$(notdir $<).shbin | $(PREFIX)as -o $@
    @echo "extern const u8" `(echo $(notdir $<).shbin | sed -e 's/^\([0-9]\)/_\1/' | tr . _)`"_end[];" > `(echo $(notdir $<).shbin | tr . _)`.h
    @echo "extern const u8" `(echo $(notdir $<).shbin | sed -e 's/^\([0-9]\)/_\1/' | tr . _)`"[];" >> `(echo $(notdir $<).shbin | tr . _)`.h
    @echo "extern const u32" `(echo $(notdir $<).shbin | sed -e 's/^\([0-9]\)/_\1/' | tr . _)`_size";" >> `(echo $(notdir $<).shbin | tr . _)`.h
    @rm ../$(notdir $<).shbin

-include $(DEPENDS)

#---------------------------------------------------------------------------------------
endif
#---------------------------------------------------------------------------------------
Click to expand...

Add -lctrcommon flag to LIBS line
 

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